Class SwapValues

    • Constructor Detail

      • SwapValues

        public SwapValues()
    • Method Detail

      • globalInfo

        public java.lang.String globalInfo()
        Returns a string describing this filter
        Returns:
        a description of the filter suitable for displaying in the explorer/experimenter gui
      • setInputFormat

        public boolean setInputFormat​(Instances instanceInfo)
                               throws java.lang.Exception
        Sets the format of the input instances.
        Overrides:
        setInputFormat in class Filter
        Parameters:
        instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).
        Returns:
        true if the outputFormat may be collected immediately
        Throws:
        UnsupportedAttributeTypeException - if the selected attribute is not nominal or if it only has one value.
        java.lang.Exception - if the input format can't be set successfully
      • input

        public boolean input​(Instance instance)
        Input an instance for filtering. The instance is processed and made available for output immediately.
        Overrides:
        input in class Filter
        Parameters:
        instance - the input instance
        Returns:
        true if the filtered instance may now be collected with output().
        Throws:
        java.lang.IllegalStateException - if no input structure has been defined.
      • listOptions

        public java.util.Enumeration listOptions()
        Returns an enumeration describing the available options.
        Specified by:
        listOptions in interface OptionHandler
        Returns:
        an enumeration of all the available options.
      • setOptions

        public void setOptions​(java.lang.String[] options)
                        throws java.lang.Exception
        Parses a given list of options.

        Valid options are:

         -C <col>
          Sets the attribute index (default last).
         -F <value index>
          Sets the first value's index (default first).
         -S <value index>
          Sets the second value's index (default last).
        Specified by:
        setOptions in interface OptionHandler
        Parameters:
        options - the list of options as an array of strings
        Throws:
        java.lang.Exception - if an option is not supported
      • getOptions

        public java.lang.String[] getOptions()
        Gets the current settings of the filter.
        Specified by:
        getOptions in interface OptionHandler
        Returns:
        an array of strings suitable for passing to setOptions
      • attributeIndexTipText

        public java.lang.String attributeIndexTipText()
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui
      • getAttributeIndex

        public java.lang.String getAttributeIndex()
        Get the index of the attribute used.
        Returns:
        the index of the attribute
      • setAttributeIndex

        public void setAttributeIndex​(java.lang.String attIndex)
        Sets index of the attribute used.
        Parameters:
        attIndex - the index of the attribute
      • firstValueIndexTipText

        public java.lang.String firstValueIndexTipText()
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui
      • getFirstValueIndex

        public java.lang.String getFirstValueIndex()
        Get the index of the first value used.
        Returns:
        the index of the first value
      • setFirstValueIndex

        public void setFirstValueIndex​(java.lang.String firstIndex)
        Sets index of the first value used.
        Parameters:
        firstIndex - the index of the first value
      • secondValueIndexTipText

        public java.lang.String secondValueIndexTipText()
        Returns:
        tip text for this property suitable for displaying in the explorer/experimenter gui
      • getSecondValueIndex

        public java.lang.String getSecondValueIndex()
        Get the index of the second value used.
        Returns:
        the index of the second value
      • setSecondValueIndex

        public void setSecondValueIndex​(java.lang.String secondIndex)
        Sets index of the second value used.
        Parameters:
        secondIndex - the index of the second value
      • main

        public static void main​(java.lang.String[] argv)
        Main method for testing this class.
        Parameters:
        argv - should contain arguments to the filter: use -h for help